Bump @nextcloud/vue from 1.3.1 to 1.4.0

Bumps [@nextcloud/vue](https://github.com/nextcloud/nextcloud-vue) from 1.3.1 to 1.4.0.
- [Release notes](https://github.com/nextcloud/nextcloud-vue/releases)
- [Commits](https://github.com/nextcloud/nextcloud-vue/compare/v1.3.1...v1.4.0

)

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